Shawn had completed some of his work at the Rivas Industries when he got to know Aaron was accompanying Aarvi at the flower shop. He really wanted to free up his brother from double work, but Shawn still needed some time to control the different branches of Rivas Industries and, importantly, their private army.
There were too many people, and he couldn't have control over them overnight. He needs to arrange everything so that the team could be outfitted for every consequence. Enforcing that discipline required a little time.
He also felt Aaron should have control over Rivas Industries and the business center of Mocon until Aarvi will be against Leon. Even though Aarvi didn't need their support, he didn't want to spare any chance in protecting her, even if it's just standing behind her.
